Update headers against v4.15-rc1. Signed-off-by: Eric Auger <eric.auger@redhat.com> Message-id: 1511883692-11511-4-git-send-email-eric.auger@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
495 lines
15 KiB
C
495 lines
15 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* Copyright (c) 1999-2002 Vojtech Pavlik
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#ifndef _INPUT_H
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#define _INPUT_H
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#include <sys/time.h>
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#include <sys/types.h>
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#include "standard-headers/linux/types.h"
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#include "standard-headers/linux/input-event-codes.h"
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/*
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* The event structure itself
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*/
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struct input_event {
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struct timeval time;
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uint16_t type;
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uint16_t code;
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int32_t value;
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};
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/*
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* Protocol version.
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*/
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#define EV_VERSION 0x010001
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/*
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* IOCTLs (0x00 - 0x7f)
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*/
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struct input_id {
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uint16_t bustype;
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uint16_t vendor;
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uint16_t product;
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uint16_t version;
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};
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/**
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* struct input_absinfo - used by EVIOCGABS/EVIOCSABS ioctls
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* @value: latest reported value for the axis.
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* @minimum: specifies minimum value for the axis.
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* @maximum: specifies maximum value for the axis.
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* @fuzz: specifies fuzz value that is used to filter noise from
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* the event stream.
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* @flat: values that are within this value will be discarded by
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* joydev interface and reported as 0 instead.
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* @resolution: specifies resolution for the values reported for
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* the axis.
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*
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* Note that input core does not clamp reported values to the
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* [minimum, maximum] limits, such task is left to userspace.
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*
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* The default resolution for main axes (ABS_X, ABS_Y, ABS_Z)
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* is reported in units per millimeter (units/mm), resolution
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* for rotational axes (ABS_RX, ABS_RY, ABS_RZ) is reported
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* in units per radian.
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* When INPUT_PROP_ACCELEROMETER is set the resolution changes.
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* The main axes (ABS_X, ABS_Y, ABS_Z) are then reported in
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* in units per g (units/g) and in units per degree per second
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* (units/deg/s) for rotational axes (ABS_RX, ABS_RY, ABS_RZ).
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*/
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struct input_absinfo {
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int32_t value;
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int32_t minimum;
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int32_t maximum;
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int32_t fuzz;
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int32_t flat;
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int32_t resolution;
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};
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/**
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* struct input_keymap_entry - used by EVIOCGKEYCODE/EVIOCSKEYCODE ioctls
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* @scancode: scancode represented in machine-endian form.
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* @len: length of the scancode that resides in @scancode buffer.
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* @index: index in the keymap, may be used instead of scancode
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* @flags: allows to specify how kernel should handle the request. For
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* example, setting INPUT_KEYMAP_BY_INDEX flag indicates that kernel
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* should perform lookup in keymap by @index instead of @scancode
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* @keycode: key code assigned to this scancode
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*
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* The structure is used to retrieve and modify keymap data. Users have
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* option of performing lookup either by @scancode itself or by @index
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* in keymap entry. EVIOCGKEYCODE will also return scancode or index
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* (depending on which element was used to perform lookup).
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*/
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struct input_keymap_entry {
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#define INPUT_KEYMAP_BY_INDEX (1 << 0)
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uint8_t flags;
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uint8_t len;
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uint16_t index;
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uint32_t keycode;
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uint8_t scancode[32];
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};
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struct input_mask {
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uint32_t type;
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uint32_t codes_size;
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uint64_t codes_ptr;
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};
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#define EVIOCGVERSION _IOR('E', 0x01, int) /* get driver version */
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#define EVIOCGID _IOR('E', 0x02, struct input_id) /* get device ID */
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#define EVIOCGREP _IOR('E', 0x03, unsigned int[2]) /* get repeat settings */
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#define EVIOCSREP _IOW('E', 0x03, unsigned int[2]) /* set repeat settings */
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#define EVIOCGKEYCODE _IOR('E', 0x04, unsigned int[2]) /* get keycode */
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#define EVIOCGKEYCODE_V2 _IOR('E', 0x04, struct input_keymap_entry)
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#define EVIOCSKEYCODE _IOW('E', 0x04, unsigned int[2]) /* set keycode */
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#define EVIOCSKEYCODE_V2 _IOW('E', 0x04, struct input_keymap_entry)
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#define EVIOCGNAME(len) _IOC(_IOC_READ, 'E', 0x06, len) /* get device name */
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#define EVIOCGPHYS(len) _IOC(_IOC_READ, 'E', 0x07, len) /* get physical location */
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#define EVIOCGUNIQ(len) _IOC(_IOC_READ, 'E', 0x08, len) /* get unique identifier */
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#define EVIOCGPROP(len) _IOC(_IOC_READ, 'E', 0x09, len) /* get device properties */
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/**
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* EVIOCGMTSLOTS(len) - get MT slot values
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* @len: size of the data buffer in bytes
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*
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* The ioctl buffer argument should be binary equivalent to
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*
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* struct input_mt_request_layout {
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* uint32_t code;
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* int32_t values[num_slots];
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* };
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*
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* where num_slots is the (arbitrary) number of MT slots to extract.
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*
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* The ioctl size argument (len) is the size of the buffer, which
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* should satisfy len = (num_slots + 1) * sizeof(int32_t). If len is
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* too small to fit all available slots, the first num_slots are
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* returned.
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*
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* Before the call, code is set to the wanted ABS_MT event type. On
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* return, values[] is filled with the slot values for the specified
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* ABS_MT code.
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*
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* If the request code is not an ABS_MT value, -EINVAL is returned.
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*/
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#define EVIOCGMTSLOTS(len) _IOC(_IOC_READ, 'E', 0x0a, len)
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#define EVIOCGKEY(len) _IOC(_IOC_READ, 'E', 0x18, len) /* get global key state */
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#define EVIOCGLED(len) _IOC(_IOC_READ, 'E', 0x19, len) /* get all LEDs */
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#define EVIOCGSND(len) _IOC(_IOC_READ, 'E', 0x1a, len) /* get all sounds status */
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#define EVIOCGSW(len) _IOC(_IOC_READ, 'E', 0x1b, len) /* get all switch states */
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#define EVIOCGBIT(ev,len) _IOC(_IOC_READ, 'E', 0x20 + (ev), len) /* get event bits */
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#define EVIOCGABS(abs) _IOR('E', 0x40 + (abs), struct input_absinfo) /* get abs value/limits */
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#define EVIOCSABS(abs) _IOW('E', 0xc0 + (abs), struct input_absinfo) /* set abs value/limits */
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#define EVIOCSFF _IOW('E', 0x80, struct ff_effect) /* send a force effect to a force feedback device */
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#define EVIOCRMFF _IOW('E', 0x81, int) /* Erase a force effect */
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#define EVIOCGEFFECTS _IOR('E', 0x84, int) /* Report number of effects playable at the same time */
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#define EVIOCGRAB _IOW('E', 0x90, int) /* Grab/Release device */
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#define EVIOCREVOKE _IOW('E', 0x91, int) /* Revoke device access */
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/**
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* EVIOCGMASK - Retrieve current event mask
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*
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* This ioctl allows user to retrieve the current event mask for specific
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* event type. The argument must be of type "struct input_mask" and
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* specifies the event type to query, the address of the receive buffer and
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* the size of the receive buffer.
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*
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* The event mask is a per-client mask that specifies which events are
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* forwarded to the client. Each event code is represented by a single bit
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* in the event mask. If the bit is set, the event is passed to the client
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* normally. Otherwise, the event is filtered and will never be queued on
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* the client's receive buffer.
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*
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* Event masks do not affect global state of the input device. They only
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* affect the file descriptor they are applied to.
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*
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* The default event mask for a client has all bits set, i.e. all events
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* are forwarded to the client. If the kernel is queried for an unknown
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* event type or if the receive buffer is larger than the number of
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* event codes known to the kernel, the kernel returns all zeroes for those
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* codes.
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*
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* At maximum, codes_size bytes are copied.
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*
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* This ioctl may fail with ENODEV in case the file is revoked, EFAULT
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* if the receive-buffer points to invalid memory, or EINVAL if the kernel
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* does not implement the ioctl.
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*/
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#define EVIOCGMASK _IOR('E', 0x92, struct input_mask) /* Get event-masks */
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/**
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* EVIOCSMASK - Set event mask
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*
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* This ioctl is the counterpart to EVIOCGMASK. Instead of receiving the
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* current event mask, this changes the client's event mask for a specific
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* type. See EVIOCGMASK for a description of event-masks and the
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* argument-type.
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*
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* This ioctl provides full forward compatibility. If the passed event type
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* is unknown to the kernel, or if the number of event codes specified in
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* the mask is bigger than what is known to the kernel, the ioctl is still
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* accepted and applied. However, any unknown codes are left untouched and
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* stay cleared. That means, the kernel always filters unknown codes
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* regardless of what the client requests. If the new mask doesn't cover
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* all known event-codes, all remaining codes are automatically cleared and
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* thus filtered.
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*
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* This ioctl may fail with ENODEV in case the file is revoked. EFAULT is
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* returned if the receive-buffer points to invalid memory. EINVAL is returned
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* if the kernel does not implement the ioctl.
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*/
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#define EVIOCSMASK _IOW('E', 0x93, struct input_mask) /* Set event-masks */
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#define EVIOCSCLOCKID _IOW('E', 0xa0, int) /* Set clockid to be used for timestamps */
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/*
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* IDs.
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*/
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#define ID_BUS 0
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#define ID_VENDOR 1
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#define ID_PRODUCT 2
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#define ID_VERSION 3
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#define BUS_PCI 0x01
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#define BUS_ISAPNP 0x02
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#define BUS_USB 0x03
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#define BUS_HIL 0x04
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#define BUS_BLUETOOTH 0x05
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#define BUS_VIRTUAL 0x06
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#define BUS_ISA 0x10
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#define BUS_I8042 0x11
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#define BUS_XTKBD 0x12
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#define BUS_RS232 0x13
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#define BUS_GAMEPORT 0x14
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#define BUS_PARPORT 0x15
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#define BUS_AMIGA 0x16
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#define BUS_ADB 0x17
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#define BUS_I2C 0x18
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#define BUS_HOST 0x19
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#define BUS_GSC 0x1A
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#define BUS_ATARI 0x1B
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#define BUS_SPI 0x1C
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#define BUS_RMI 0x1D
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#define BUS_CEC 0x1E
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#define BUS_INTEL_ISHTP 0x1F
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/*
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* MT_TOOL types
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*/
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#define MT_TOOL_FINGER 0
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#define MT_TOOL_PEN 1
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#define MT_TOOL_PALM 2
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#define MT_TOOL_MAX 2
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/*
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* Values describing the status of a force-feedback effect
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*/
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#define FF_STATUS_STOPPED 0x00
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#define FF_STATUS_PLAYING 0x01
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#define FF_STATUS_MAX 0x01
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/*
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* Structures used in ioctls to upload effects to a device
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* They are pieces of a bigger structure (called ff_effect)
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*/
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/*
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* All duration values are expressed in ms. Values above 32767 ms (0x7fff)
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* should not be used and have unspecified results.
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*/
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/**
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* struct ff_replay - defines scheduling of the force-feedback effect
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* @length: duration of the effect
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* @delay: delay before effect should start playing
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*/
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struct ff_replay {
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uint16_t length;
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uint16_t delay;
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};
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/**
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* struct ff_trigger - defines what triggers the force-feedback effect
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* @button: number of the button triggering the effect
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* @interval: controls how soon the effect can be re-triggered
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*/
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struct ff_trigger {
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uint16_t button;
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uint16_t interval;
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};
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/**
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* struct ff_envelope - generic force-feedback effect envelope
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* @attack_length: duration of the attack (ms)
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* @attack_level: level at the beginning of the attack
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* @fade_length: duration of fade (ms)
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* @fade_level: level at the end of fade
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*
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* The @attack_level and @fade_level are absolute values; when applying
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* envelope force-feedback core will convert to positive/negative
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* value based on polarity of the default level of the effect.
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* Valid range for the attack and fade levels is 0x0000 - 0x7fff
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*/
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struct ff_envelope {
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uint16_t attack_length;
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uint16_t attack_level;
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uint16_t fade_length;
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uint16_t fade_level;
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};
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/**
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* struct ff_constant_effect - defines parameters of a constant force-feedback effect
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* @level: strength of the effect; may be negative
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* @envelope: envelope data
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*/
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struct ff_constant_effect {
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int16_t level;
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struct ff_envelope envelope;
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};
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/**
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* struct ff_ramp_effect - defines parameters of a ramp force-feedback effect
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* @start_level: beginning strength of the effect; may be negative
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* @end_level: final strength of the effect; may be negative
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* @envelope: envelope data
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*/
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struct ff_ramp_effect {
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int16_t start_level;
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int16_t end_level;
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struct ff_envelope envelope;
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};
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/**
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* struct ff_condition_effect - defines a spring or friction force-feedback effect
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* @right_saturation: maximum level when joystick moved all way to the right
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* @left_saturation: same for the left side
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* @right_coeff: controls how fast the force grows when the joystick moves
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* to the right
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* @left_coeff: same for the left side
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* @deadband: size of the dead zone, where no force is produced
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* @center: position of the dead zone
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*/
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struct ff_condition_effect {
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uint16_t right_saturation;
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uint16_t left_saturation;
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int16_t right_coeff;
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int16_t left_coeff;
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uint16_t deadband;
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int16_t center;
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};
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/**
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* struct ff_periodic_effect - defines parameters of a periodic force-feedback effect
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* @waveform: kind of the effect (wave)
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* @period: period of the wave (ms)
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* @magnitude: peak value
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* @offset: mean value of the wave (roughly)
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* @phase: 'horizontal' shift
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* @envelope: envelope data
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* @custom_len: number of samples (FF_CUSTOM only)
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* @custom_data: buffer of samples (FF_CUSTOM only)
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*
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* Known waveforms - FF_SQUARE, FF_TRIANGLE, FF_SINE, FF_SAW_UP,
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* FF_SAW_DOWN, FF_CUSTOM. The exact syntax FF_CUSTOM is undefined
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* for the time being as no driver supports it yet.
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*
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* Note: the data pointed by custom_data is copied by the driver.
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* You can therefore dispose of the memory after the upload/update.
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*/
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struct ff_periodic_effect {
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uint16_t waveform;
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uint16_t period;
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int16_t magnitude;
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int16_t offset;
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uint16_t phase;
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struct ff_envelope envelope;
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uint32_t custom_len;
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int16_t *custom_data;
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};
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/**
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* struct ff_rumble_effect - defines parameters of a periodic force-feedback effect
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* @strong_magnitude: magnitude of the heavy motor
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* @weak_magnitude: magnitude of the light one
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*
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* Some rumble pads have two motors of different weight. Strong_magnitude
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* represents the magnitude of the vibration generated by the heavy one.
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*/
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struct ff_rumble_effect {
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uint16_t strong_magnitude;
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uint16_t weak_magnitude;
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};
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/**
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* struct ff_effect - defines force feedback effect
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* @type: type of the effect (FF_CONSTANT, FF_PERIODIC, FF_RAMP, FF_SPRING,
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* FF_FRICTION, FF_DAMPER, FF_RUMBLE, FF_INERTIA, or FF_CUSTOM)
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* @id: an unique id assigned to an effect
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* @direction: direction of the effect
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* @trigger: trigger conditions (struct ff_trigger)
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* @replay: scheduling of the effect (struct ff_replay)
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* @u: effect-specific structure (one of ff_constant_effect, ff_ramp_effect,
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* ff_periodic_effect, ff_condition_effect, ff_rumble_effect) further
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* defining effect parameters
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*
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* This structure is sent through ioctl from the application to the driver.
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* To create a new effect application should set its @id to -1; the kernel
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* will return assigned @id which can later be used to update or delete
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* this effect.
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*
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* Direction of the effect is encoded as follows:
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* 0 deg -> 0x0000 (down)
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* 90 deg -> 0x4000 (left)
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* 180 deg -> 0x8000 (up)
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* 270 deg -> 0xC000 (right)
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*/
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struct ff_effect {
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uint16_t type;
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int16_t id;
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uint16_t direction;
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struct ff_trigger trigger;
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struct ff_replay replay;
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union {
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struct ff_constant_effect constant;
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struct ff_ramp_effect ramp;
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struct ff_periodic_effect periodic;
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struct ff_condition_effect condition[2]; /* One for each axis */
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struct ff_rumble_effect rumble;
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} u;
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};
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/*
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* Force feedback effect types
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*/
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#define FF_RUMBLE 0x50
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#define FF_PERIODIC 0x51
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#define FF_CONSTANT 0x52
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#define FF_SPRING 0x53
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#define FF_FRICTION 0x54
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#define FF_DAMPER 0x55
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#define FF_INERTIA 0x56
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#define FF_RAMP 0x57
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#define FF_EFFECT_MIN FF_RUMBLE
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#define FF_EFFECT_MAX FF_RAMP
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/*
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* Force feedback periodic effect types
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*/
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#define FF_SQUARE 0x58
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#define FF_TRIANGLE 0x59
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#define FF_SINE 0x5a
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#define FF_SAW_UP 0x5b
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#define FF_SAW_DOWN 0x5c
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#define FF_CUSTOM 0x5d
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#define FF_WAVEFORM_MIN FF_SQUARE
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#define FF_WAVEFORM_MAX FF_CUSTOM
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/*
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* Set ff device properties
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*/
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#define FF_GAIN 0x60
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#define FF_AUTOCENTER 0x61
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/*
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* ff->playback(effect_id = FF_GAIN) is the first effect_id to
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* cause a collision with another ff method, in this case ff->set_gain().
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* Therefore the greatest safe value for effect_id is FF_GAIN - 1,
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* and thus the total number of effects should never exceed FF_GAIN.
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*/
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#define FF_MAX_EFFECTS FF_GAIN
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#define FF_MAX 0x7f
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#define FF_CNT (FF_MAX+1)
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#endif /* _INPUT_H */
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